package com.punai.common.core.controller;

import java.beans.PropertyEditorSupport;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.util.Date;
import java.util.List;

import cn.hutool.core.io.IoUtil;
import cn.hutool.core.stream.StreamUtil;
import cn.hutool.core.util.IdUtil;
import com.punai.common.utils.*;
import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.annotation.InitBinder;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.punai.common.constant.HttpStatus;
import com.punai.common.core.domain.AjaxResult;
import com.punai.common.core.domain.model.LoginUser;
import com.punai.common.core.page.PageDomain;
import com.punai.common.core.page.TableDataInfo;
import com.punai.common.core.page.TableSupport;
import com.punai.common.utils.sql.SqlUtil;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * web层通用数据处理
 * 
 * @author ruoyi
 */
public class BaseController
{
    protected final Logger logger = LoggerFactory.getLogger(this.getClass());

    /**
     * 将前台传递过来的日期格式的字符串，自动转化为Date类型
     */
    @InitBinder
    public void initBinder(WebDataBinder binder)
    {
        // Date 类型转换
        binder.registerCustomEditor(Date.class, new PropertyEditorSupport()
        {
            @Override
            public void setAsText(String text)
            {
                setValue(DateUtils.parseDate(text));
            }
        });
    }

    protected Long getCompanyId() {
        return ServletUtils.getParameterToLong("paramCompId",SecurityUtils.getCompanyId());
    }
    /**
     * 设置请求分页数据
     */
    protected void startPage()
    {
        PageUtils.startPage();
    }

    /**
     * 设置请求排序数据
     */
    protected void startOrderBy()
    {
        PageDomain pageDomain = TableSupport.buildPageRequest();
        if (StringUtils.isNotEmpty(pageDomain.getOrderBy()))
        {
            String orderBy = SqlUtil.escapeOrderBySql(pageDomain.getOrderBy());
            PageHelper.orderBy(orderBy);
        }
    }

    /**
     * 清理分页的线程变量
     */
    protected void clearPage()
    {
        PageUtils.clearPage();
    }

    /**
     * 响应请求分页数据
     */
    @SuppressWarnings({ "rawtypes", "unchecked" })
    protected TableDataInfo getDataTable(List<?> list)
    {
        TableDataInfo rspData = new TableDataInfo();
        rspData.setCode(HttpStatus.SUCCESS);
        rspData.setMsg("查询成功");
        rspData.setRows(list);
        rspData.setTotal(new PageInfo(list).getTotal());
        return rspData;
    }

    /**
     * 响应请求分页数据
     */
    @SuppressWarnings({ "rawtypes", "unchecked" })
    protected TableDataInfo getDataTable(List<?> list,List<?> list1)
    {
        TableDataInfo rspData = new TableDataInfo();
        rspData.setCode(HttpStatus.SUCCESS);
        rspData.setMsg("查询成功");
        rspData.setRows(list);
        rspData.setTotal(list1.size());
        return rspData;
    }

    /**
     * 返回成功
     */
    public AjaxResult success()
    {
        return AjaxResult.success();
    }

    /**
     * 返回失败消息
     */
    public AjaxResult error()
    {
        return AjaxResult.error();
    }

    /**
     * 返回成功消息
     */
    public AjaxResult success(String message)
    {
        return AjaxResult.success(message);
    }

    /**
     * 返回失败消息
     */
    public AjaxResult error(String message)
    {
        return AjaxResult.error(message);
    }

    /**
     * 响应返回结果
     * 
     * @param rows 影响行数
     * @return 操作结果
     */
    protected AjaxResult toAjax(int rows)
    {
        return rows > 0 ? AjaxResult.success() : AjaxResult.error();
    }

    /**
     * 响应返回结果
     * 
     * @param result 结果
     * @return 操作结果
     */
    protected AjaxResult toAjax(boolean result)
    {
        return result ? success() : error();
    }

    /**
     * 页面跳转
     */
    public String redirect(String url)
    {
        return StringUtils.format("redirect:{}", url);
    }

    /**
     * 获取用户缓存信息
     */
    public LoginUser getLoginUser()
    {
        return SecurityUtils.getLoginUser();
    }

    /**
     * 获取登录用户id
     */
    public Long getUserId()
    {
        return getLoginUser().getUserId();
    }

    /**
     * 获取登录部门id
     */
    public Long getDeptId()
    {
        return getLoginUser().getDeptId();
    }

    /**
     * 获取登录用户名
     */
    public String getUsername()
    {
        return getLoginUser().getUsername();
    }

    protected void downloadFile(InputStream inputStream,
                                HttpServletResponse response) {
        // 输出流
        OutputStream outputStream = null;
        try {
            //设置文件输出类型
            response.setCharacterEncoding("utf-8");
            response.setContentType("application/octet-stream");
            outputStream = response.getOutputStream();
            byte[] b = new byte[2048];
            int length;
            while ((length = inputStream.read(b)) > 0) {
                outputStream.write(b, 0, length);
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                // 关闭流
                if(outputStream != null) {
                    outputStream.close();
                }
                if(inputStream != null) {
                    inputStream.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    protected void downloadFileAndName(String fileName, InputStream inputStream,
                                HttpServletResponse response) {
        // 输出流
        OutputStream outputStream = null;
        String downFileName = IdUtil.fastUUID();
        InputStream downInputStream = new InputStream() {
            @Override
            public int read() throws IOException {
                return -1;
            }
        };
        try {
            if(StringUtil.isNotBlank(fileName)) {
                downFileName = getFileName(fileName);
            }
            if(inputStream != null) {
                downInputStream = inputStream;
            }
            //设置文件输出类型
            response.setCharacterEncoding("utf-8");
            response.setContentType("application/octet-stream");
            response.setHeader("Content-disposition", "attachment; filename="
                    + new String(downFileName.getBytes("utf-8")));
            //	+ new String(downFileName.getBytes("utf-8"), "ISO8859-1"));
            outputStream = response.getOutputStream();
            byte[] b = new byte[2048];
            int length;
            while ((length = downInputStream.read(b)) > 0) {
                outputStream.write(b, 0, length);
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                // 关闭流
                if(outputStream != null) {
                    outputStream.close();
                }
                if(inputStream != null) {
                    inputStream.close();
                }
                if(downInputStream != null) {
                    downInputStream.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    protected String getFileName(String fileRealName) {
    try {
        HttpServletRequest request = ServletUtils.getRequest();
        String agent = request.getHeader("User-Agent");
        if (null != agent) {
            agent = agent.toLowerCase();
            if (agent.indexOf("firefox") != -1) {
                fileRealName = new String(fileRealName.getBytes(),"iso8859-1");
            } else if (agent.indexOf("msie") != -1) {
                fileRealName = java.net.URLEncoder.encode(fileRealName,"UTF-8");
            } else {
                fileRealName = java.net.URLEncoder.encode(fileRealName,"UTF-8");
            }
        }
    } catch (UnsupportedEncodingException e) {
        return fileRealName;
    }
    return fileRealName;
}

}
